“Organizers hoped the theme would attract more volunteers than previous simulations of industrial accidents or train crashes,” the AP reports, quoting a spokesman for the agency as saying that “People got zombie fever here in Delaware.” The exercise included decontamination procedures for hazardous materials, and was inspired by an “emergency preparedness” post on the CDC web site citing the popular fascination with zombies. (The number of zombie ebooks in Amazon’s Kindle store has increased by 13.9% in just the last two months.)

Now, “Dozens of agencies have embraced the idea,” the AP reports, “spreading the message that if you’re prepared for a zombie attack, you’re prepared for just about anything.”